Visico™ ME4425/Ambicat™ LE4476

About
Visico ME4425 / Ambicat LE4476 is a silane crosslinkable natural compound designed for low voltage power cables up to 6kV. The base material Visico ME4425 in combination with the catalyst masterbatch Ambicat LE4476 will accelerate the moisture-induced crosslinking reaction. The system is highly active and crosslinks quickly at ambient conditions, in sauna or in hot water. When properly mixed, addition of 5 parts of Ambicat LE4476 to 95 parts of Visico ME4425 , insulation with excellent thermo-oxidative stability, also in contact with copper as well as aluminium, is achieved. If the insulation is designed to meet the thermooxidative ageing demand requiring by IEC 60502 at 150°C in contact with copper, addition of 9 parts Ambicat LE4476 to Visico ME4425 is recommended. Visico ME4425 / Ambicat LE4476 contains antioxidant, metal deactivator and a drying agent. Visico ME4425 contains a permanent scorch retardant additive, ensuring safe processing and enabling the use of highly active crosslinking catalyst. Visico ME4425 / Ambicat LE4476 in combination meets the applicable requirements as below when processed using sound extrusion and testing procedure: ASTM D 1248 Type I, Class A, Category 4 IEC 60502-1 HD 603 S1 HD 604 S1 NEMA WC 70 NEMA WC 71 The standards referred to above is a selection and is not complete coverage of all applicable standards. Contact your Borealis representative for additional information. The base material Visico ME4425 in combination with the catalyst masterbatch Ambicat LE4476 is a ready-made two-component system which crosslinks quickly at ambient conditions, in sauna or in hot water. Visico ME4425 is based upon a cost optimised low density polyethylene, copolymerised with vinyl silane. The catalyst/carbon black masterbatch, Ambicat LE4476 , contains a novel, patented, environmentally friendly crosslinking catalyst and is completely free from heavy metals.&&

About

Visico ME4425 / Ambicat LE4476 is a silane crosslinkable natural compound designed for low voltage power cables up to 6kV. The base material Visico ME4425 in combination with the catalyst masterbatch Ambicat LE4476 will accelerate the moisture-induced crosslinking reaction. The system is highly active and crosslinks quickly at ambient conditions, in sauna or in hot water. When properly mixed, addition of 5 parts of Ambicat LE4476 to 95 parts of Visico ME4425 , insulation with excellent thermo-oxidative stability, also in contact with copper as well as aluminium, is achieved. If the insulation is designed to meet the thermooxidative ageing demand requiring by IEC 60502 at 150°C in contact with copper, addition of 9 parts Ambicat LE4476 to Visico ME4425 is recommended. Visico ME4425 / Ambicat LE4476 contains antioxidant, metal deactivator and a drying agent. Visico ME4425 contains a permanent scorch retardant additive, ensuring safe processing and enabling the use of highly active crosslinking catalyst. Visico ME4425 / Ambicat LE4476 in combination meets the applicable requirements as below when processed using sound extrusion and testing procedure: ASTM D 1248 Type I, Class A, Category 4 IEC 60502-1 HD 603 S1 HD 604 S1 NEMA WC 70 NEMA WC 71 The standards referred to above is a selection and is not complete coverage of all applicable standards. Contact your Borealis representative for additional information. The base material Visico ME4425 in combination with the catalyst masterbatch Ambicat LE4476 is a ready-made two-component system which crosslinks quickly at ambient conditions, in sauna or in hot water. Visico ME4425 is based upon a cost optimised low density polyethylene, copolymerised with vinyl silane. The catalyst/carbon black masterbatch, Ambicat LE4476 , contains a novel, patented, environmentally friendly crosslinking catalyst and is completely free from heavy metals.&&

Product Description
Supplier	Borealis AG
Generic	XLPE
Material Status	Commercial: Active
Features	Excellent Processability,Good surface appearance,Good Dimensional Stability,Crosslinked,Inoxidizability,Low density,Good stability,Heat Stabilized,Fast Cure
Availabilitys	Africa & Middle East ,Asia Pacific,Europe

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density	0.930	g/cm³	ISO 1183
Melt Flow Rate
190℃，2.16kg	1.0	g/10min	ISO 1133
ESCR(Environmental Stress Cracking Resistance)
50 ℃, 10% non-ionic surfactant, F20	> 96.0	hr	IEC 60811-4-1/B

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shore D, 1 second	55		ISO 868
tensile strength
yield	> 20.0	MPa	ISO 527-2/250
Tensile strain
fracture	> 300	%	ISO 527-2/250

THERMAL	Nominal value	Unit	Test method
Embrittlement temperature	< -76.0	℃	ASTM D746
thermosetting			IEC 60811-2-1
200℃	60	%	IEC 60811-2-1
200℃	0.0	%	IEC 60811-2-1

Aging performance	Nominal value	Unit	Test method
The rate of change in tensile strength			IEC 60811-1-2
135℃，240 hr	< 25	%	IEC 60811-1-2
150℃，168 hr	< 30	%	IEC 60811-1-2

Electrical performance	Nominal value	Unit	Test method
Volume resistivity	> 1.0E+16	ohms·cm	IEC 60093
Dielectric strength	> 22	kV/mm	IEC 60243-1
Dielectric constant
50 Hz	< 2.30		IEC 60250
Dissipation factor
50 Hz	< 5.0E-4		IEC 60250

Supplementary information	Nominal value	Unit
cross-linking
23℃，700.0 µm	1.5	day
23℃，1.80 mm	7.0	day
90℃，700.0 µm	< 15.0	min
90℃，1.80 mm	1.00	hr

Process Conditions
Extrusion	Nominal value	Unit	Test method
Barrel 1 zone temperature	150	°C
Barrel 2 zone temperature	185	°C
Barrel 3 zone temperature	185	°C
Barrel 4 zone temperature	185	°C
Melt temperature	190 to 195	°C
Nozzle temperature	185	°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. Mixture 95:5, ISO 1872-2
3. Elongation under load, 0.20 MPa
4. Permanent deformation, 0.20 MPa
5. Addition of 5 % Catalyst after ageing
6. Addition of 9 % Catalyst after ageing
7. In air, 50 % humidity
8. Sauna or water bath
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